fileWriteln

 

 

Description

The fileWriteln function converts the expressions to ascii text and writes the text value of the expressions to the specified fileID, {fileID}, (see the fileOpen function). The fileWriteln function always adds the _eol character sequence at the end of each line before writing to the file.

When to use

Data is entered into a file with the fileWrite, fileWriteln,, fdisplay or fileDisplay functions, however, records are not actually committed to the file until the file is closed. Thus, attempting to read a record immediately after a fileWrite, fdisplay or fileDisplay will result in an error. In order to verify records that have been written, it is necessary to close the file and save the file (fileClose with an option argument equal to 1) . The file can then be re-opened and read with the fileRead function.

 

Syntax

(fwriteln fileID exp)



Name Description AIS Types
fileID An Integer representing the fileID of the file returned from a previous fileOpen function.Integer
expAn expression.Symbol ByteVector Text String


Returns:

If the fwriteln is successful, the Boolean value, true is returned.

 

Examples

Here are a number of links to Lambda coding examples which contain this instruction in various use cases.

 

Argument Types

Here are the links to the data types of the function arguments.

ByteVector Text Integer Boolean

Here are also a number of links to functions having arguments with any of these data types.

++(Symbol) +=(Symbol) +(Complex) +(Number)
/=(Symbol) /(Complex) /(Number) *(Complex)
*(Number) --(Symbol) -=(Symbol) -(Complex)
-(Number) abortTransaction(ObjectRepository) abs(Complex) abs(Number)
addMethod(BitVector) addMethod(Boolean) addMethod(Brick) addMethod(Character)
addMethod(CpxVector) addMethod(Date) addMethod(Dictionary) addMethod(Directory)
addMethod(FltVector) addMethod(Function) addMethod(IntVector) addMethod(List)
addMethod(Matrix) addMethod(NumMatrix) addMethod(NumVector) addMethod(Number)
addMethod(ObjVector) addMethod(ObjectRepository) addMethod(Pair) addMethod(PcodeVector)
addMethod(ShortVector) addMethod(String) addMethod(Structure) addMethod(Symbol)
addMethod(Vector) addMethod(Void) addi(Number) appendWriteln(ByteVector)
avg(CpxVector) avg(Number) badd(Boolean) balance(Lambda)
bcompareEQ(Boolean) bcompareGE(Boolean) bcompareGT(Boolean) bcompareLE(Boolean)
bcompareLT(Boolean) bcompareNE(Boolean) bdiv(Boolean) beginTransaction(ObjectRepository)
binaryInsert(CpxVector) binaryInsert(FltVector) binaryInsert(IntVector) binaryInsert(Matrix)
binaryInsert(NumMatrix) binaryInsert(NumVector) binaryInsert(ShortVector) binaryInsert(Structure)
binaryInsert(Vector) binaryNand(Integer) binaryNor(Integer) binaryNot(Integer)
binaryNxor(Integer) binarySearch(CpxVector) binarySearch(Dictionary) binarySearch(FltVector)
binarySearch(IntVector) binarySearch(Matrix) binarySearch(NumMatrix) binarySearch(NumVector)
binarySearch(ObjVector) binarySearch(ShortVector) binarySearch(Structure) binarySearch(Vector)
bitwiseAnd(Integer) bitwiseNand(Integer) bitwiseNor(Integer) bitwiseNot(Integer)
bitwiseNxor(Integer) bitwiseOr(Integer) bitwiseShiftLeft(Integer) bitwiseShiftRight(Integer)
bitwiseXor(Integer) bmod(Boolean) bmul(Boolean) boolean(Boolean)
cadd(Character) ccompareEQ(Character) ccompareGE(Character) ccompareGT(Character)
ccompareLE(Character) ccompareLT(Character) ccompareNE(Character) cdiv(Character)
char(String) character(Character) checkPointTransaction(ObjectRepository) clean(String)
clear(Context) clear(ObjectRepository) cmod(Character) cmul(Character)
code(String) commitTransaction(ObjectRepository) compareEQ(BitVector) compareEQ(Boolean)
compareEQ(Brick) compareEQ(Character) compareEQ(Complex) compareEQ(CpxVector)
compareEQ(Date) compareEQ(Dictionary) compareEQ(Directory) compareEQ(FltVector)
compareEQ(Function) compareEQ(IntVector) compareEQ(Lambda) compareEQ(List)
compareEQ(Matrix) compareEQ(NumMatrix) compareEQ(NumVector) compareEQ(Number)
compareEQ(ObjVector) compareEQ(ObjectRepository) compareEQ(Pair) compareEQ(ShortVector)
compareEQ(String) compareEQ(Structure) compareEQ(Symbol) compareEQ(Vector)
compareEQ(Void) compareGE(BitVector) compareGE(Boolean) compareGE(Brick)
compareGE(Character) compareGE(Complex) compareGE(CpxVector) compareGE(Date)
compareGE(Dictionary) compareGE(Directory) compareGE(Function) compareGE(IntVector)
compareGE(Lambda) compareGE(List) compareGE(Matrix) compareGE(NumMatrix)
compareGE(Number) compareGE(ObjVector) compareGE(ObjectRepository) compareGE(Pair)
compareGE(ShortVector) compareGE(String) compareGE(Structure) compareGE(Symbol)
compareGE(Vector) compareGE(Void) compareGT(BitVector) compareGT(Boolean)
compareGT(Brick) compareGT(Character) compareGT(Complex) compareGT(CpxVector)
compareGT(Date) compareGT(Dictionary) compareGT(Directory) compareGT(Function)
compareGT(IntVector) compareGT(Lambda) compareGT(List) compareGT(Matrix)
compareGT(NumMatrix) compareGT(NumVector) compareGT(Number) compareGT(ObjVector)
compareGT(ObjectRepository) compareGT(Pair) compareGT(ShortVector) compareGT(String)
compareGT(Structure) compareGT(Symbol) compareGT(Vector) compareGT(Void)
compareLE(BitVector) compareLE(Boolean) compareLE(Brick) compareLE(Character)
compareLE(Complex) compareLE(CpxVector) compareLE(Date) compareLE(Dictionary)
compareLE(Directory) compareLE(FltVector) compareLE(Function) compareLE(IntVector)
compareLE(Lambda) compareLE(List) compareLE(Matrix) compareLE(NumMatrix)
compareLE(NumVector) compareLE(Number) compareLE(ObjVector) compareLE(ObjectRepository)
compareLE(Pair) compareLE(ShortVector) compareLE(String) compareLE(Structure)
compareLE(Symbol) compareLE(Vector) compareLE(Void) compareLT(BitVector)
compareLT(Boolean) compareLT(Brick) compareLT(Character) compareLT(Complex)
compareLT(CpxVector) compareLT(Date) compareLT(Dictionary) compareLT(Directory)
compareLT(FltVector) compareLT(Function) compareLT(IntVector) compareLT(Lambda)
compareLT(List) compareLT(Matrix) compareLT(NumMatrix) compareLT(NumVector)
compareLT(Number) compareLT(ObjVector) compareLT(ObjectRepository) compareLT(Pair)
compareLT(ShortVector) compareLT(String) compareLT(Structure) compareLT(Symbol)
compareLT(Vector) compareLT(Void) compareNE(BitVector) compareNE(Boolean)
compareNE(Brick) compareNE(Character) compareNE(Complex) compareNE(CpxVector)
compareNE(Date) compareNE(Dictionary) compareNE(Directory) compareNE(FltVector)
compareNE(Function) compareNE(IntVector) compareNE(Lambda) compareNE(List)
compareNE(Matrix) compareNE(NumMatrix) compareNE(NumVector) compareNE(Number)
compareNE(ObjVector) compareNE(ObjectRepository) compareNE(Pair) compareNE(ShortVector)
compareNE(String) compareNE(Structure) compareNE(Symbol) compareNE(Vector)
compareNE(Void) compare(BitVector) compare(Boolean) compare(Brick)
compare(Character) compare(Complex) compare(CpxVector) compare(Date)
compare(Dictionary) compare(Directory) compare(FltVector) compare(Function)
compare(IntVector) compare(Lambda) compare(List) compare(Matrix)
compare(NumMatrix) compare(NumVector) compare(Number) compare(ObjVector)
compare(ObjectRepository) compare(Pair) compare(ShortVector) compare(String)
compare(Structure) compare(Symbol) compare(Vector) compare(Void)
comparison(BitVector) comparison(Boolean) comparison(Brick) comparison(Character)
comparison(Complex) comparison(Date) comparison(Dictionary) comparison(Directory)
comparison(FltVector) comparison(Function) comparison(IntVector) comparison(List)
comparison(Matrix) comparison(NumMatrix) comparison(NumVector) comparison(Number)
comparison(ObjVector) comparison(ObjectRepository) comparison(Pair) comparison(ShortVector)
comparison(String) comparison(Structure) comparison(Symbol) comparison(Vector)
comparison(Void) compile(Lambda) compile(List) compress(ByteVector)
cons(Pair) count(Dictionary) count(Directory) count(List)
count(Matrix) count(NumMatrix) count(Pair) count(Structure)
count(Vector) csub(Character) day(Date) days360(Date)
debugDialog(String) debug(Context) debug(Lambda) decode(ByteVector)
deleteRows(Brick) delete(Dictionary) delete(Directory) delete(FltVector)
delete(IntVector) delete(List) delete(Matrix) delete(NumMatrix)
delete(NumVector) delete(ObjVector) delete(ObjectRepository) delete(Pair)
delete(ShortVector) delete(Structure) delete(Vector) disassemble(Context)
disassemble(Lambda) display(ByteVector) display(FileIO) divi(Number)
downcase(String) downcase(Symbol) encode(ByteVector) evalInSyncLocalContext(Context)
exportTab(Lambda) exportTab(ObjectRepository) fact(Integer) fact(Number)
fdisplay(ByteVector) fdisplay(Text) fileClose(ByteVector) fileClose(Text)
fileDisplay(ByteVector) fileDisplay(Text) fileErase(ByteVector) fileErase(Text)
fileOpen(ByteVector) fileOpen(Text) fileReadRecord(ByteVector) fileReadRecord(String)
fileReadRecord(Text) fileRead(ByteVector) fileRead(Text) fileResize(ByteVector)
fileResize(String) fileResize(Text) fileSeek(ByteVector) fileSeek(String)
fileSeek(Text) fileWrite(ByteVector) fileWrite(String) fileWrite(Text)
filewriteln(ByteVector) filewriteln(String) filewriteln(Text) findBlock(BitVector)
find(String) floor(Number) fraction(Number) freeBlock(BitVector)
gc(Context) gcd(Integer) gcd(Number) getContextPtr(Context)
getHttp(String) getHttp(Text) hashString(String) hashString(Symbol)
hour(Date) iadd(Integer) icompareEQ(Integer) icompareGE(Integer)
icompareGT(Integer) icompareLE(Integer) icompareLT(Integer) icompareNE(Integer)
idiv(Integer) imod(Integer) importTab(Lambda) importTab(ObjectRepository)
imul(Number) insertRows(Brick) insert(Dictionary) insert(Directory)
insert(FltVector) insert(IntVector) insert(Matrix) insert(NumMatrix)
insert(NumVector) insert(ObjVector) insert(ShortVector) insert(Structure)
insert(Vector) inside(BitVector) inside(Dictionary) inside(Directory)
inside(IntVector) inside(List) inside(Matrix) inside(NumMatrix)
inside(NumVector) inside(ShortVector) inside(Structure) inside(Vector)
inspect(Context) inspect(Lambda) inspect(ObjectRepository) integer(Integer)
isAtom(BitVector) isAtom(Brick) isAtom(Dictionary) isAtom(Directory)
isAtom(FltVector) isAtom(IntVector) isAtom(List) isAtom(Matrix)
isAtom(NumMatrix) isAtom(NumVector) isAtom(ObjVector) isAtom(Pair)
isAtom(PcodeVector) isAtom(ShortVector) isAtom(Structure) isAtom(Vector)
isBitVector(BitVector) isBoolean(Boolean) isBound(Dictionary) isBound(Directory)
isBound(Structure) isByteVector(ByteVector) isCharAlphabetic(ByteVector) isCharAlphabetic(String)
isCharAlphabetic(Symbol) isCharAlphanumeric(ByteVector) isCharAlphanumeric(String) isCharAlphanumeric(Symbol)
isCharLowercase(ByteVector) isCharLowercase(String) isCharLowercase(Symbol) isCharName(ByteVector)
isCharName(String) isCharName(Symbol) isCharNumeric(ByteVector) isCharNumeric(String)
isCharNumeric(Symbol) isCharUppercase(ByteVector) isCharUppercase(String) isCharUppercase(Symbol)
isCharWhitespace(ByteVector) isCharWhitespace(String) isCharWhitespace(Symbol) isChar(String)
isCharacter(Character) isComplex(Complex) isDate(Date) isDictionary(Dictionary)
isDirectory(Directory) isEqual(BitVector) isEqual(Boolean) isEqual(Brick)
isEqual(Character) isEqual(Complex) isEqual(Date) isEqual(Dictionary)
isEqual(Directory) isEqual(FltVector) isEqual(Function) isEqual(IntVector)
isEqual(List) isEqual(Matrix) isEqual(NumMatrix) isEqual(NumVector)
isEqual(Number) isEqual(ObjVector) isEqual(Pair) isEqual(ShortVector)
isEqual(String) isEqual(Structure) isEqual(Vector) isEqual(Void)
isError(Error) isEven(Number) isExact(Number) isFloatVector(FltVector)
isIdentical(BitVector) isIdentical(Boolean) isIdentical(Brick) isIdentical(Character)
isIdentical(Complex) isIdentical(Date) isIdentical(Dictionary) isIdentical(Directory)
isIdentical(Error) isIdentical(FltVector) isIdentical(Function) isIdentical(IntVector)
isIdentical(List) isIdentical(Matrix) isIdentical(NumMatrix) isIdentical(NumVector)
isIdentical(Number) isIdentical(ObjVector) isIdentical(ObjectRepository) isIdentical(Pair)
isIdentical(PcodeVector) isIdentical(ShortVector) isIdentical(Structure) isIdentical(Vector)
isIdentical(Void) isImmediate(ObjectRepository) isInexact(Number) isInside(BitVector)
isInside(Dictionary) isInside(Directory) isInside(IntVector) isInside(List)
isInside(Matrix) isInside(NumMatrix) isInside(NumVector) isInside(ObjVector)
isInside(Pair) isInside(ShortVector) isInside(Structure) isInside(Vector)
isIntegerVector(IntVector) isInteger(Integer) isMatrix(Matrix) isMember(BitVector)
isMember(Dictionary) isMember(Directory) isMember(IntVector) isMember(List)
isMember(Matrix) isMember(NumMatrix) isMember(NumVector) isMember(ObjVector)
isMember(Pair) isMember(ShortVector) isMember(Structure) isMember(Vector)
isMoney(Number) isNegative(Number) isNull(Number) isNull(Void)
isNumberMatrix(NumMatrix) isNumberVector(NumVector) isNumber(Number) isObjectVector(ObjVector)
isObject(BitVector) isObject(Brick) isObject(ByteVector) isObject(Dictionary)
isObject(Directory) isObject(FltVector) isObject(IntVector) isObject(List)
isObject(Matrix) isObject(NumMatrix) isObject(NumVector) isObject(ObjVector)
isObject(Pair) isObject(PcodeVector) isObject(ShortVector) isObject(String)
isObject(Structure) isObject(Symbol) isObject(Vector) isOdd(Number)
isPair(List) isPair(Pair) isPcodeVector(PcodeVector) isPositive(Number)
isString(String) isStructure(Structure) isSymbol(Symbol) isText(String)
isTransaction(ObjectRepository) isType(BitVector) isType(Boolean) isType(Brick)
isType(Character) isType(Complex) isType(Date) isType(Dictionary)
isType(Directory) isType(FltVector) isType(Function) isType(IntVector)
isType(Matrix) isType(NumMatrix) isType(NumVector) isType(Number)
isType(ObjVector) isType(ObjectRepository) isType(Pair) isType(ShortVector)
isType(String) isType(Structure) isType(Symbol) isType(Vector)
isType(Void) isVector(Vector) isZero(Number) isub(Integer)
kurtosis(Number) lcm(Integer) left(String) length(BitVector)
length(Brick) length(Dictionary) length(Directory) length(FltVector)
length(IntVector) length(List) length(Matrix) length(NumMatrix)
length(NumVector) length(ObjVector) length(ObjectRepository) length(Pair)
length(PcodeVector) length(ShortVector) length(String) length(Structure)
length(Symbol) length(Vector) lisp(Lambda) lisp(List)
list(List) loadObject(ByteVector) loadWorkspace(Context) macroReplace(String)
makeQuotedList(List) makeQuotedSymbol(Symbol) max(Number) median(Number)
member(BitVector) member(Dictionary) member(Directory) member(IntVector)
member(List) member(Matrix) member(NumMatrix) member(NumVector)
member(ObjVector) member(ShortVector) member(Structure) member(Vector)
mid(String) min(Number) minute(Date) mod(Complex)
mod(Number) modi(Number) money(Number) month(Date)
morph(List) muli(Number) ncompareEQ(Number) ncompareGE(Number)
ncompareGT(Number) ncompareLE(Number) ncompareLT(Number) ncompareNE(Number)
new(BitVector) new(Brick) new(ByteVector) new(CpxVector)
new(Dictionary) new(Directory) new(FltVector) new(IntVector)
new(Lambda) new(Matrix) new(NumMatrix) new(NumVector)
new(ObjVector) new(ObjectRepository) new(PcodeVector) new(ShortVector)
new(String) new(Structure) new(Symbol) new(Vector)
number(Number) objectToMatrix(Matrix) objectToNumMatrix(NumMatrix) objectToNumVector(NumVector)
onError(Error) onError(Lambda) pair(Pair) parse(String)
postHttp(String) postHttp(Text) preAllocateFixedMemoryBlocks(Context) product(Number)
random(Number) randomize(Number) range(Number) rank(Matrix)
rank(NumMatrix) readHtmlPage(String) readHtmlPage(Text) refAttributes(Dictionary)
refAttributes(Directory) refAttributes(Structure) refAttributes(Vector) refValues(Dictionary)
refValues(Directory) refValues(Structure) refValues(Vector) ref(BitVector)
ref(Boolean) ref(Brick) ref(Character) ref(Complex)
ref(Date) ref(Dictionary) ref(Directory) ref(FltVector)
ref(Function) ref(IntVector) ref(Lambda) ref(List)
ref(Matrix) ref(NumMatrix) ref(NumVector) ref(Number)
ref(ObjVector) ref(ObjectRepository) ref(PcodeVector) ref(ShortVector)
ref(String) ref(Structure) ref(Symbol) ref(Vector)
ref(Void) remove(BitVector) remove(Dictionary) remove(Directory)
remove(IntVector) remove(Matrix) remove(NumMatrix) remove(NumVector)
remove(ObjVector) remove(ShortVector) remove(Structure) remove(Vector)
rename(ObjectRepository) replace(String) rept(String) requestHttp(String)
requestHttp(Text) reset(Context) resize(BitVector) resize(Dictionary)
resize(Directory) resize(FltVector) resize(IntVector) resize(Matrix)
resize(NumMatrix) resize(NumVector) resize(ObjVector) resize(ShortVector)
resize(Structure) resize(Vector) right(String) round(Number)
run(ByteVector) run(Text) saveObject(ByteVector) saveObject(Integer)
saveRepository(ObjectRepository) saveWorkspace(Context) second(Date) send(BitVector)
send(Boolean) send(Brick) send(Character) send(CpxVector)
send(Date) send(Dictionary) send(Directory) send(FltVector)
send(Function) send(IntVector) send(Lambda) send(List)
send(Matrix) send(NumMatrix) send(NumVector) send(Number)
send(ObjectRepository) send(Pair) send(ShortVector) send(String)
send(Structure) send(Symbol) send(Vector) send(Void)
setAttributes(Dictionary) setAttributes(Directory) setAttributes(Structure) setAttributes(Vector)
setBlock(BitVector) setCar(List) setCar(Pair) setCdr(BitVector)
setCdr(Brick) setCdr(Dictionary) setCdr(Directory) setCdr(FltVector)
setCdr(IntVector) setCdr(List) setCdr(Matrix) setCdr(NumMatrix)
setCdr(NumVector) setCdr(ObjVector) setCdr(Pair) setCdr(ShortVector)
setCdr(Structure) setCdr(Vector) setLastCdr(BitVector) setLastCdr(FltVector)
setLastCdr(IntVector) setLastCdr(List) setLastCdr(Matrix) setLastCdr(NumMatrix)
setLastCdr(NumVector) setLastCdr(ObjVector) setLastCdr(Structure) setLastCdr(Vector)
set(ObjectRepository) setf(ObjectRepository) setq(BitVector) setq(Boolean)
setq(Brick) setq(Character) setq(Date) setq(Dictionary)
setq(Directory) setq(FltVector) setq(IntVector) setq(Lambda)
setq(List) setq(Matrix) setq(NumVector) setq(Number)
setq(ObjVector) setq(ObjectRepository) setq(PcodeVector) setq(ShortVector)
setq(String) setq(Structure) setq(Symbol) setq(Vector)
setq(Void) sizeof(BitVector) sizeof(Boolean) sizeof(Brick)
sizeof(ByteVector) sizeof(Character) sizeof(Complex) sizeof(Date)
sizeof(Dictionary) sizeof(Directory) sizeof(FltVector) sizeof(Function)
sizeof(IntVector) sizeof(List) sizeof(Matrix) sizeof(NumMatrix)
sizeof(NumVector) sizeof(Number) sizeof(ObjVector) sizeof(ObjectRepository)
sizeof(Pair) sizeof(PcodeVector) sizeof(ShortVector) sizeof(String)
sizeof(Structure) sizeof(Symbol) sizeof(Vector) sizeof(Void)
skew(Number) sort(BitVector) sort(Dictionary) sort(Directory)
sort(FltVector) sort(IntVector) sort(List) sort(Matrix)
sort(NumMatrix) sort(NumVector) sort(ObjVector) sort(ShortVector)
sort(Structure) sort(Vector) sqrt(Complex) sqrt(Number)
srandom(Number) stdev(Number) stdevp(Number) stringCiEQ(String)
stringCiGE(String) stringCiGT(String) stringCiLE(String) stringCiLT(String)
stringCiNE(String) stringFill(String) stringToBVector(String) stringToVector(String)
string(Complex) string(String) subi(Number) subscribe(Context)
substitute(String) substringCiEQ(String) substringCiGE(String) substringCiGT(String)
substringCiLE(String) substringCiLT(String) substringCiNE(String) substringEQ(String)
substringFill(String) substringGE(String) substringGT(String) substringLE(String)
substringLT(String) substringNE(String) substring(String) sum(Complex)
sum(Number) sumsqr(Complex) sumsqr(Number) svmRegression(Vector)
symbol(Symbol) systemCheck(Context) system(ByteVector) system(Text)
testFunction(Structure) text(String) time(Date) trim(String)
type(BitVector) type(Boolean) type(Brick) type(ByteVector)
type(Character) type(Complex) type(Date) type(Dictionary)
type(Directory) type(FltVector) type(Function) type(IntVector)
type(Lambda) type(Matrix) type(NumMatrix) type(NumVector)
type(Number) type(ObjVector) type(ObjectRepository) type(Pair)
type(PcodeVector) type(ShortVector) type(String) type(Structure)
type(Symbol) type(Vector) type(Void) uncompress(ByteVector)
uniqueInsert(FltVector) uniqueInsert(IntVector) uniqueInsert(Matrix) uniqueInsert(NumMatrix)
uniqueInsert(NumVector) uniqueInsert(ObjVector) uniqueInsert(ShortVector) uniqueInsert(Structure)
uniqueInsert(Vector) upcase(String) upcase(Symbol) var(Number)
varp(Number) vectorBinaryInnerProduct(NumVector) vectorBipolarInnerProduct(NumVector) vectorCosineInnerProduct(NumVector)
vectorCubeInnerProduct(NumVector) vectorDelete(Directory) vectorExpInnerProduct(NumVector) vectorFill(BitVector)
vectorFill(FltVector) vectorFill(IntVector) vectorFill(Matrix) vectorFill(NumMatrix)
vectorFill(NumVector) vectorFill(ObjVector) vectorFill(ShortVector) vectorFill(Vector)
vectorInnerProduct(NumVector) vectorLogInnerProduct(NumVector) vectorQuartInnerProduct(NumVector) vectorQuintInnerProduct(NumVector)
vectorSigmoidInnerProduct(NumVector) vectorSineInnerProduct(NumVector) vectorSquareInnerProduct(NumVector) vectorTanInnerProduct(NumVector)
vectorTanhInnerProduct(NumVector) version(Context) writeln(ByteVector) writeln(String)
writeln(Text) year(Date)

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